baber/WOPTO huggingface dataset:
Patent GB-188664-A (GB)
Title: A method of operating film-treating apparatus
IPC: G03B27/16
Filed: 1922-11-09
Abstract: 188,664. Werkstõtte f³r Feinmechanik Ges. Nov, 9, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Kinematograph picture films; printing-apparatus.-Consists in film-treating apparatus, such as film-reproducing machines, film-colouring machines, apparatus for altering the position of the image on the film &c., in which the regulating devices are pneumatically operated. In the form shown, the intensity of the printing light, in reproducing films comprising sections of different density, is regulated pneumatically from perforations on the negative film 11, arranged where required between the pictures in any one of the positions 6 - - 10, Fig. 1. In passing over the reproducing table 36<1>, Fig. 2, the negative passes under a compressed-air nozzle 19 arranged above a part of the table perforated by holes 14 in alignment with the film-perforations 6 - - 10, so that air is admitted to one of these holes when a perforated part of the film registers therewith. Each hole 14 communicates with a chamber 13 enclosing a spring-urged piston 20 adapted to depress a plunger 24 to close electric spring-contacts 26, 29, which complete the circuit of the printing lamp 33 through a different length of the rheostat 34 according to the particular pair of contacts 26, 29 closed. A spring pin 31 engages a groove 25 in the depressed plunger 24, and retains it until the section of film concerned has been printed; the pin is then released by the action of a pneumatically-operated cam 36, and another plunger is depressed by the registration with the corresponding hole 14 of another perforation on the film. The film may be perforated so as to operate more than one plunger simultaneously. The invention may also be employed to actuate devices for changing from image-copying to title-copying, for releasing roll-titles, for adjusting the length of the titles, for changing the image from the horizontal to the vertical position, or for punching the positive film at points to be used subsequentlv for pneumatically operating such devices as colouring machines. A separate pneumatically-operating controlling- band, disc, or roll may be provided adapted to move synchronously with the negative film. The apparatus may work by suction instead of by compressed air, and the air for pneumatic regulation may be used for removing dust from the film.
Patent GB-712475-A (GB)
Title: Screening or sorting apparatus for roots, tubers and the like, and a harvester incorporating the same
IPC: B07B13/00
Filed: 1949-12-01
Abstract: 712,475. Harvesting root crops. WHITSED, W. J. Feb. 21, 1951 [Dec. 1, 1949], No. 30798/49. Class 6 (3). [Also in Groups II and XXX] Apparatus for sorting root crops, e.g. potatoes, or screening the latter from earth clods and stones, comprises an endless openwork conveyer inclined to the horizontal transversely of itself, and having rows of short upstanding elements across its outer face with the elements in each row spaced apart and progressively increasing in height and/or pitch from the top to the bottom of the incline. The upstanding elements may be humps on rearwardly extending fingers 12, Fig. 5, formed as integral or individual members of comb-like members 11 pivotally mounted on cross bars 3 extending between side chains 1, 2 of the conveyer, the fingers each resting, during the upper run, on the flat portions of the next succeeding comb members 11, but throwing over, to clear the surface of the reticulated conveyer, on passing over the forward end of the openwork conveyer. A conveyer 9, Fig. 1, discharges the roots or tubers on to the rear end of the conveyer which then roll down with the largest more nearly reaching the lower edge. The graded crops finally discharge into bins arranged side by side or on to another conveyer 10. The lateral spaces between the humps may be constant but the humps of increasing size both in height and width. Alternatively all the crops may be delivered over the lower edge of the inclined conveyer. The conveyer end rollers may be mounted in pivoted bearings 5, 7, the upper of which is adjustable in height. A shield 13 prevents the crops falling off the lower edge of the conveyer. The apparatus may be applied to a potato or other harvester, smaller earth clods falling through the conveyer meshes and greater clods being separated from potatoes owing to the greater tendency of the latter to roll down to one side. Specification 670,706 is referred to.
Patent GB-439591-A (GB)
Title: Improvements relating to stuffing boxes
IPC: F16J15/20
Filed: 1934-10-26
Abstract: 439,591. Stuffing - boxes. TRIST & CO., Ltd., R., 1, Brixton Road, London, and BOMYER, L., 81, The Harebreaks, Watford, Hertfordshire. Oct. 26, 1934, No. 30824. [Class 122 (v)] U-shaped stuffing - box packings of the kind described in Specifications 14379 /04 and 4267 /07, [both in Class 122], are spaced apart by rigid distance pieces 8, 9 to avoid radial compression of the inner limbs of the packing-rings under gland pressure.
Patent GB-1236521-A (GB)
Title: Improvements in or relating to servo steering devices, particularly for motor vehicles
IPC: B62D5/09
Filed: 1969-06-18
Abstract: 1,236,521. Hydrostatic steering mechanism. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. 18 June, 1969 [22 June, 1968], No. 30861/69. Heading B7H. In power-assisted hydrostatic steering mechanism comprising a control pump 3 actuated by a steering wheel through gearing including an internally-toothed ring gear 10 rotatably mounted in a housing 17 and an orbital pinion 8 coupled to the steering shaft 7 for universal pivoting movement and mounted on a eccentric 12 on a control pump shaft 13, rotation of the ring gear 10 is limited by engagement of recesses 18, 18 in the ring gear with stop pins 15, 16 in the housing 17, and two driver pins 25, 26 in the ring gear 10 engage in recesses 21, 22 in two valve spools 23, 24 for displacing the spools in respective opposite directions against restoring forces. One valve spool 24 is provided with reaction pistons 49, 50 one of which, depending on the steering direction, is subjected through bores 45, 46 or 47, 48 to the pressure in delivery grooves 35, 37 to which fluid from a reservoir 5 is supplied by a servo pump 4 so that rotation of the steering wheel is resisted by a reaction proportional to the supply pressure. The other valve spool 23 is centred by springs 29, 30 which act through spring cups 27, 28. A steering motor 6 communicates with the control pump 3 when the valve spool 23 is displaced through one of grooves 65, 67 which are either dimensioned so that the steering motor is hydraulically isolated when the spool is in the neutral position or are dimensioned so that the steering motor remains in communication with the control pumps whereby road shocks tending to deflect the steerable wheels will be resisted by fluid pressure and felt at the steering wheel.
Patent GB-1092807-A (GB)
Title: Process for preparing 1-aminoadamantane and its hydrochloride
IPC: C07C5/03
Filed: 1964-12-16
Abstract: 1 - Amino - adamantane and its hydrochloride are prepared by introducing a replaceable atom or group into adamantane in the 1-position, subjecting the 1-substituted adamantane to aminolysis to form the free base and, if desired, reacting the base with hydrogen chloride to form the hydrochloride.  1 - Bromo - adamantane is prepared by reacting adamantane with molecular bromine.
Patent GB-724894-A (GB)
Title: Improvements in or relating to ventilating fans for windows
IPC: F04D25/12
Filed: 1953-11-09
Abstract: 724,894. Screw fans. BYRN, G., [trading as BYRN CO., G.]. Nov. 9, 1953, No. 30949/53. Class 110 (1). [Also in Group X] A motor-driven ventilator comprises a pair of dome-shaped shields 3, 5 adapted to be clamped from opposite sides against the edge of an opening 2 in a window pane 1, the outer shield 3, preferably moulded in one piece from plastic, having horizontal louvres 4 and the inner shield 5, preferably pressed up from sheet metal, having sector-shaped openings 8 closable by a rotatable shutter 9, a motor 11 having fan blades 14 carried on its shaft 12 being mounted on the inside of the shield 5. The rim portions 15, 6 of the shields are screwed together against the edge of the opening 2, the shutter 9 being provided with lugs to facilitate operating by means, e.g. of a chain, not shown.
Patent GB-505044-A (GB)
Title: Improvements in electric circuits for operating electric discharge devices
IPC: H05B41/04
Filed: 1937-11-11
Abstract: 505,044. Discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen) Nov. 11, 1937, No. 31060. [Class 39 (i)] [Also in Group XXXV] A discharge device 8 is supplied through an inductance coil 1 of inductance L and a condenser 2 of capacity C which are such that " 1/wC exceeds wL but LCw2 is not very different from one, for example 0À5" w being the supply frequency in radius per second. A low resistance path including a switch 5, 6 is provided between and in series with the electrodes 4, 41. The switch may comprise a bi-metallic element heated by passage of current so long as the main switch 7 is closed. The discharge device 8 which may be a rare gas or sodium discharge lamp has its thermionic electrodes 4, 4<1> heated by the discharge during operation of the lamp and is provided with an outer jacket 3. Specification 435,786, [Group XXXV], is referred to.
Patent GB-603976-A (GB)
Title: Improvements in arrangements for cooling gun barrels
IPC: F41A21/24
Filed: 1945-11-19
Abstract: 603,976. Cooling gun barrels. AKTIEBOLAGET BOFORS. Nov. 19, 1945, No. 31076. Convention date, Feb. 23, 1939. [Class 92 (ii)] In order that it may be cooled, the barrel of a gun comprises an inner liner 1 having a thin wall and a smooth outer surface, and an outer thicker body 2 tightly enclosing the liner and formed on its inner surface with longitudinal channels 9, these channels being interconnected by fore and rear peripheral channels 10, 11 which interconnect with radial channels 13, 12, respectively. The cooling medium, which may be liquid or gas under high pressure, is conducted through the inlet channels 12 and after passing through the channel 11 and channels 9 is discharged through the outlet channels 13. The liner 1 is fixed in an axial direction by a flange 3, a lining member 4, and a nut 5, and at the forward end of the barrel there is a stuffing-box 6 against which a muzzle nut 7 presses.
Patent GB-800399-A (GB)
Title: Improvements in logical circuits employing transformers
IPC: H03K19/16
Filed: 1956-10-12
Abstract: 800,399. Non - contact - making relays. SPERRY RAND CORPORATION. Oct. 12, 1956 [Nov. 4, 1.955], No. 31185/56. Class 40 (9). A circuit produces one output to indicate the presence of an -input signal and another output to indicate its absence and includes a transformer with a winding which is connected or disconnected from a source of energization under the control of the input signal which switches one end of the winding between a fixed potential and earth. As shown, a winding 10 on a transformer T is clamped at a point 20 to a voltage of - E which supplies current over diode D2 and resistor R to a source of voltage - V. A transistor connected between point 20 and earth is open circuit when its base is at earth so that a voltage alternating between earth and - 2E passes diode D1 to energize winding 10 and produce an output in a winding 11 to indicate the absence of an input signal. If an input signal is applied to make the base of the transistor negative, thereby causing the transistor to conduct, the voltage at point 20 rises to earth so that rectifier D1 is disconnected and transformer T is unenergized. In this condition no output appears across winding 11, but the rise in voltage of point 20 indicates the presence of an input. To increase the rate at which the transistor may be switched, a positive pulse may be applied to the base on removal of the input signal.
Patent GB-1113774-A (GB)
Title: An improved worktable
Inventor: SIMMONDS MEYER
IPC: B25H1/00
Filed: 1966-07-12
Abstract: 1,113,774. Sewing machines. BERNARD SIMMONDS Ltd. 12 July, 1966, No. 31239/66. Heading D1G. [Also in Division B4] A sewing machine table comprises a frame 2 supporting a working surface 1 and at least two load supporting members, each load supporting member being associated with electrical switch means in circuit with a separate visual indicating device whereby visual indication is given as to whether or not either of the members is supporting a load. The frame 2 carries pivotally mounted shelves 3, 4 and 5 hinged respectively about edges 6, 7 and 8 and each shelf being spring biased upwardly. A microswitch is mounted beneath each shelf so that the actuating member of the switch is depressed when a load is resting on the shelf. Coloured light bulbs 14, 15, 16 each in circuit with one of the microswitches, are mounted on a stanchion 12 which extends upwardly from the working surface 1. The supply circuit may be arranged so that a light bulb is illuminated when a shelf is loaded and extinguished when a shelf is empty or vice versa.
Patent GB-1528567-A (GB)
Title: Vehicle window cleaning apparatus
IPC: B60S1/58
Filed: 1977-07-26
Abstract: 1528567 Vehicle window wipers SWF SPEZIALFABRIK FUR AUTOZUBEHOR GUSTAV RAU GmbH 26 July 1977 [30 July 1976] 31293/77 Heading A4F  A rear window wiper and washer installation is fastened by bolts 14, Fig. 3, or hinged Fig. 5 (not shown) to a vehicle body and has an offset base portion 17 surmounted by a housing enclosing an electric motor 20, Fig. 2, driving gears 26, 27 and a reciprocating rack 28 oscillating the wiper shaft 16. A cam 33 rotating with the wheel 27 is arranged to swing a link 32 to pull on a rod 31 operating a rubber bellows 30 connected to a washing liquid supply. A crank or belt drive could be used instead of a rack and pinion and the wiping installation could be arranged to operate independently of a diaphragm or centrifugal wash pump coupled to the motor.
Patent GB-1064876-A (GB)
Title: Cathode ray tube with an arrangement to reduce implosion and method to manufacture such an arrangement
IPC: H01J29/87
Filed: 1964-08-04
Abstract: 1,064,876. Cathode-ray tubes. STANDARD TELEPHONES & CABLES Ltd. Aug. 4, 1964 [Aug. 1, 1963], No. 31348/64. Heading HID. A cathode-ray tube is fitted with an antiimplosion frame in the form of an endless metal strap 2 applied over the sealing seam 5 between the face and cone of the tube, the space between the tube and strap being filled with mastic and/or filling means 6, and the metal strap exerting pressure on the sealing seam. As shown, a plastic mask, e.g. of P.V.C., is fitted over iron strap 2 and forms a frame for the tube screen and also serves as a mould during filling of the space between the tube and strap. The filling means may be plaster of Paris, or vinyl resins which expand upon curing, or alternatively the metal strap may be applied hot, the filling means then being epoxy resins or polyesters which shrink upon curing. Angle brackets for tube mounting may be secured to metal strap 2 at the comers of the tube face.
Patent GB-313857-A (GB)
Abstract: 313,857. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Alexanderson, E. F. W.). June 16, 1923, [Convention date]. Copying - telegraphs. - Continuous electric energy of modulated intensity is changed into interrupted signalling energy of constant intensity but with signalling periods proportional to the intensity of the modulated energy by superimposing alternating interrupting energy of constant frequency and amplitude on the modulated energy, and causing the signalling energy to flow only when the superimposed wave exceeds a predetermined value in amplitude. Light from a picture-exposing apparatus 48 is interrupted by a chopper wheel 42 before imping- ing on a photoelectric cell 10. The resulting modulated alternating-current is amplified in a valve amplifier 44 and rectified in a detecting-tube 46. Interrupting-energy from a. source 62 is superimposed on the output of the detector, and the resulting current amplified by a valve 64. High-frequency energy from a low-powered source 68 is coupled through a transformer 70 and condenser 72 to a valve 66, which is provided with grid bias from a battery 74 which also overcomes the anode potential of the valve 64. The valve 66 is biased so that it only becomes conductive with the aid of the superimposed wave passed to it from the amplifier 64 through a high-frequency choke 76, and therefore passes high-frequency energy from the oscillator 68 only during the peaks of the interrupter wave and for a duration dependent on the magnitude of the modulated energy in the output of the detector (Fig. 1, not shown). When the interrupting-frequency is less than 60 cycles per second the thermionic relay 66 may be replaced by a mechanical relay (Fig. 3, not shown). The chopper wheel may be omitted (Fig 2, not shown).
Patent GB-1214737-A (GB)
Title: Data signalling systems
IPC: H04L7/00
Filed: 1968-07-01
Abstract: 1,214,737. Data storage. INTERNATIONAL BUSINESS MACHINES CORP. 1 July, 1968 [25 July, 19671, No. 31424/68. Addition to 1,165,658. Heading G4C. A data signalling system using a signal transition in the region of the centre of a data cell for a bit of one kind (e.g. 1), and a transition in the region of the start of a data cell for a bit of the other kind unless the latter follows a bit of the one kind in which case it is represented by no transition, comprises a receiver which generates a reference waveform at a frequency equal to a plurality of times the data cell repetition frequency, separates data pulses derived from those data transitions that occur early and those that occur later in the cycle of the waveform, develops an asymmetric data gate signal in response to the reference waveform to pass such data pulses to the separating means, and controls the generating means in response to data derived pulses selectively delayed according to the current separation of received data transitions. In Fig. 1, recovered raw data from a magnetic tape, disc or drum or data transmission system has a pulse for each transition above. A ramp generator 12 produces two ramps per bit cell to cause a trigger 18 to produce a pulse throughout the second half of each bit cell and to cause a gate generator 22 (involving threshold detectors) to produce a pulse on each ramp flyback. The pulses from 18, 22 are ORed at 26 to produce a pulse occupying about 60% of each bit cell to gate out, at 32, those raw data pulses representing 1s. The " ramp flyback " pulses from 22 are applied to AND gates 40, 42 and to a trigger 36 which partially enables the gates 40, 42 alternately in respective halves of the bit cells so that a raw data pulse which occurs at the ramp flyback in the centre of a bit cell (i.e. too early) is passed to set a bi-stable 46 and reset a bi-stable 44 whereas a raw data pulse which occurs at the ramp flyback at the start of a bit cell (i.e. too late) is passed to set bi-stable 44 and reset bi-stable 46. A raw data pulse not occurring at the ramp flyback resets both bi-stables 44, 46 via an AND gate 72. The raw data pulses are also delayed at 56, 58 to apply each pulse to ANDS 66, 50, 54 with delays of half a bit cell, rather more than this and rather less than this respectively. One of ANDS 66, 50, 54 is enabled according as neither bi-stable 44, 46 is set, bistable 46 is set or bi-stable 44 is set respectively, to pass the appropriately delayed raw data pulse to an error detector 16 for comparison with the ramps to synchronize the ramp generator 12 with the raw data signals by adjusting its frequency and phase.
Patent GB-1400077-A (GB)
Title: Automatic speed control system
Inventor: SOMMER F
IPC: H02P23/00
Filed: 1972-07-05
Abstract: 1400077 Automatic control of speed PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 5 July 1972 [8 July 1971]  31426/72 Heading G3R An automatic speed control system has a comparator 10 which determines the phase difference between the actual speed signal provided by magnets 7 influencing pick up 8 and a desired speed signal provided by oscillator 9. The comparison is made by using one of the incoming signals to sample a sawtooth waveform generated in synchronism with the other incoming signal and thus an error signal is provided which charges from a direct voltage when the frequencies are equal to a sawtooth waveform when they are unequal, e.g. on run up. The error signal is applied to the operating coil 12 of eddy current brake 13 through two transmission paths 11 and 15 where the latter path includes a differentiating element 16 whose output is summed at 20. The second path elements ensure that during run up the controlling coil 12 is supplied with a signal which increases in steps and has a value which increases with the speed difference so accelerating the response of the system. In the particular embodiment shown in Fig. 2 the differentiating element 16 comprises a positive and negative section feeding a capacitor 20 so that the charge on the capacitor increases or decreases dependent on whether a positive or negative pulse is produced. The output of capacitor 20 is fed  through resistor 24 to imput 23 of the operational amplifier 22 in parallel with the direct signal through element 25. To avoid an overvoltage being produced at input 23 a threshold device 30 is provided. The second input to operational amplifier 22 is connected to a reference potential source 27 and is protected by threshold device 34 In an alternative embodiment, Fig. 3 (not shown), the direct path from capacitor 10 is connected to one input of the operational amplifier and the path including the differentiating element is connected to the second input of the amplifier.
Patent GB-473578-A (GB)
Title: An improved elevator for handling tubing in wells
IPC: E21B19/06
Filed: 1936-11-17
Abstract: 473,578. Handling tubing in wells. BYRON JACKSON CO. Nov. 17, 1936, No. 31504. Convention date, Jan. 10. [Class 85] In an elevator for handling tubing &c. in wells comprising two pipe encircling members 1, 2 hinged together, a handle 14 is provided on one member adjacent the hinge, and stops 12, 13 limit opening of the elevator, the handle 14 lying substantially in the central plane 15 when the elevator is open.
Patent GB-712808-A (GB)
Title: Improvements in or relating to inductance devices
IPC: H01F17/04
Filed: 1952-12-12
Abstract: 712,808. Inductors. WESTERN ELECTRIC CO., Inc. Dec. 12,1952 [Dec. 18, 1951], No. 31537/52. Class 38(2) A high frequency inductor comprises a shell 10 and core 11 both of ferromagnetic material such as ferrite with a space 23 between in which coils 17 are placed surrounding the core. Air gaps are formed by a paper disc 13 and a gap 43 between the core 11 and shell 10. To vary the value of inductance, the reluctance of the flux path is altered by the vertical movement of a ferromagnetic tuning cylinder 36 which provides a by-pass to the air gap 43 for the flux. This cylinder has a threaded head 35 of non-conducting, non- magnetic material which screws into an aperture 32 of an insulating terminal plate 27. The tuning cylinder is locked in position by a set screw 37 which bears on a bent spring strip 38 lying in a transverse hole 39 in head 35 with its ends on the screw thread of aperture 32. The lowest position of the tuning cylinder may be determined by a fixed shoulder stop 33 or by an adjustable stop formed by split ring which screws into aperture 32, Fig. 4 (not shown). To give best results the radius PR of the core should be between 0.4 and 0.5 and the height HR of the shell should be between 1.0 and 1.25 times the outer radius R of the shell respectively.